Crown Squirrelfish

Sargocentron diadema

Crown Squirrelfish (Sargocentron diadema) is a nocturnal reef squirrelfish of the Indo-Pacific, usually sheltering by day and foraging at night. It is not a common target for anglers, and reliable sport-fishing information is limited.

Saltwater

Crown Squirrelfish reference image — Rickard Zerpe, cc-by, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

Bright red to orange-red body with pale vertical bars
Prominent pale or white-edged spiny dorsal fin with a distinct raised front profile
Large eye and obvious white or pale membrane on the lower jaw typical of squirrelfish

Habitat

Steep coral and rocky reef slopes, reef drop-offs, outer reef ledges, and caves or crevices by day; forages over adjacent reef flats and slope habitats at night.

Bait notes

Rarely targeted; small strips of fish, shrimp, squid, or cut bait can take bites at night. Small jigging lures or tiny soft plastics worked near reef structure may also draw strikes.

Behavior

Nocturnal predator that feeds on small fishes and crustaceans after dark, using shelter during daylight. Often associates with complex reef structure and remains close to cover.

Caution

Reef fish consumption can carry ciguatera risk in some tropical areas; local advisories matter. The dorsal spines are sharp, so handle carefully.

Fishing notes

Fish after sunset around reef edges, caves, and ledges with light tackle and small baits. Keep presentations close to structure; this species is more of an incidental reef catch than a primary target.